Symmetricom TimeSource 2500 Manual page 95

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Procedure J. Power Up (cont'd)
Step
13 In the Longitude area: Enter the longitude of the TimeSource 2500 location. The
longitude must be accurate to within 1/8 mi. Type, or use the up and down arrows
on the side of each data entry box, to enter the degrees and minutes; the seconds
must be entered using the up and down arrows only. Select W for longitudes west of
the Greenwich meridian, and E for longitudes east of the Greenwich meridian.
14 In the Altitude area: Enter the altitude of the TimeSource 2500 in feet. Type, or use
the up and down arrows on the left side of this data entry box. Use the adjacent Ref.
to data entry box to identify the method of calculating the datum or reference point.
Notes:
1. The factory-set WGS-84 (World Geodetic System 1984) selection is the same
method of calculating the datum point used by most manufacturers of GPS
hand-held receivers and mapping software. Essentially, GPS hand-held receivers
and mapping software provide mean sea level altitude data. Do not change the
Ref. to setting from WGS-84.
2. Altitude is usually obtained for ground (mean sea) level. If the TimeSource 2500
will be installed in a multi-story building, add approximately 10 ft per story from
the ground level, to calculate the total altitude.
15 In the Location ID area: Enter two to eight alphanumeric characters for the
TimeSource 2500 identification. The identification name can be used to identify this
particular TimeSource 2500 among multiple TimeSource 2500 Systems.
Caution:
A name must be entered. Do not leave this field blank.
16 Verify GPS Fix Mode is set to Time Transfer.
17 In the Elevation Mask area: Enter the elevation mask. Type or use the up and down
arrows on the right side of the data entry box. The receiver does not seek satellites
from the horizon to this number of degrees above the horizon. The factory default
setting is 5.
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Action
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Installation
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